Methods and apparatus for multi-stage activation of communication devices

2. The method of claim 1, wherein the first signal is received via the near-field RF interface.

3. The method of claim 2, wherein the second signal is received via the magnetic-field interface or near-field radio frequency RF interface.

4. The method of claim 3, wherein the magnetic-field interface is on in the fully functional mode.

5. The method of claim 1, further comprising changing the communication device from the fully functional mode to the deep sleep mode in response to receiving a third signal.